where do you buy the gps reciever for the psp and the chotto shot?

Question

I'm not sure where to buy the gps reciever for the psp and the chotto shot and also which one should I get. another question why can't you just get it in like gamestop or like target

Answer 1

It is pretty much only officially supported and available in Japan right now. So you can risk E-bay and probably not have a local map that is compatible. Or wait til later in the year to see if they get it at Target or Best Buy.